Results 131 to 140 of about 5,024 (177)

The Viscosity of the Pike’s Endolymph

Journal of Experimental Biology, 1970
ABSTRACT A micro method, based on Stoke’s law corrected for the influence of adjacent walls, if used for the determination of the absolute viscosity of the pike’s endolymph. Samples of maximally 19 μl were used. The absolute viscosity has an average value of 1·20 ±0·08 cP at 23 °C for ten individual pike labyrinths.
J. H. Ten Kate, J. W. Kuiper
openaire   +1 more source

The composition of the endolymph, perilymph

Comparative Biochemistry and Physiology, 1961
Abstract 1. (1) Serum, cranial fluid, perilymph, endolymph and jelly from the ampullae of Lorenzini of Raja have been analysed for Na, K, Cl and urea. 2. (2) The concentrations in mM/kg water are: Na K Cl Urea Perilymph 281 3·54 321 447 Endolymph 295 63·4 391 381 Lorenzini jelly 443 12·5 581 74·8 ...
R.W. Murray, W.T.W. Potts
openaire   +1 more source

Fluid Kinetics of Endolymph during Calorization

Acta Oto-Laryngologica, 1990
Various theories on the mechanism of caloric vestibular excitability are discussed and compared with our model, which involves two factors of endolymph movement: thermoconvection and fluid expansion. With this theory, caloric nystagmus in microgravity can be explained, as well as certain phenomena on earth, such as different vestibular responses ...
H W, Pau, W, Limberg
openaire   +2 more sources

Isoenzymes of Lactic Dehydrogenase of the Perilymph and the Endolymph

Acta Oto-Laryngologica, 1969
Enzyme dehydrogenase is directly related to carbohydrate metabolism. By histochemical methods LDH was found in some hair cells and the stria vascularis. Microchemical methods provided LDH iso-enzyme patterns in the endo- and perilymph.
P, Kluyskens, W, Verstraete
openaire   +2 more sources

Cationic changes in endolymph during hypoglycemia

The Laryngoscope, 1972
AbstractExperimentally induced hypoglycemia, using insulin as the hypoglycemic agent, was carried out, using three groups of guinea pigs. The differentiating factor was the time sequence. After the animals had been hypoglycemic for periods of time ranging from one to three hours, the cochlear endolymph.
M, Mendelsohn, J, Roderique
openaire   +2 more sources

Cations in the Endolymph With Noise-Induced Deafness

Archives of Otolaryngology - Head and Neck Surgery, 1971
The endolymphatic Na+and K+changes in response to intense acoustical stimulation were monitored in vivo with cation sensitive glass electrodes in normal and noise-induced deaf guinea pigs to study the effect of destruction of the organ of Corti on endolymphatic cationic changes.
T, Nakashima, N L, Meiring, J B, Snow
openaire   +2 more sources

Endolymph pressure in Meniere's disease

Otolaryngology–Head and Neck Surgery, 1990
During the streptomycin perfusion/shunt of the lateral semicircular duct operation for Meniere's disease, the lateral semicircular duct is exposed by removal of the bone of the lateral semicircular canal. Before perfusion with streptomycin and creation of a shunt in the lateral semicircular duct, the pressure in the lateral semicircular duct is ...
openaire   +2 more sources

On the chemical composition of the human perilymph and endolymph

The Laryngoscope, 1950
AbstractSUMMARY. 1. Five specimens of perilymph were obtained from the lateral semicircular canal of humans while performing Day operations for Ménière's disease2. One specimen of endolymph was collected from a patient with Ménière's disease during a Portmann operation3.
J G, WALTNER, S, RAYMOND
openaire   +2 more sources

Endolymph Formation in the Inner Ear of Pigeons

ORL, 2010
The endolymphatic space of pigeons was studied by using double-barrelled electrodes with a potassium liquid ion exchanger. The K+ activity of the endolymph was 155 mM in the cochlea and 133 mM in the ampulla, respectively. Positive DC potential in the cochlea (+14.5 mV) was much lower than in guinea pigs (+80 mV) whereas in the ampulla of pigeons the ...
O, Ninoyu, C, Hommerich, C, Morgenstern
openaire   +2 more sources

Secretion of endolymph by semicircular canals of the shark

American Journal of Physiology-Renal Physiology, 1988
The semicircular canals of the vestibular labyrinth of the dogfish shark, Squalus acanthias, may serve as a simple in vitro system for the study of the ionic transport mechanisms involved in endolymph formation. Electron microscopy showed that the epithelium was made up of at least three distinct cell types divided into separate regions running the ...
J L, Garvin, K R, Spring, P A, Santi
openaire   +2 more sources